47684784 has 80 divisors (see below), whose sum is σ = 141935360. Its totient is φ = 13512960.

The previous prime is 47684783. The next prime is 47684797. The reversal of 47684784 is 48748674.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (47684783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46194 + ... + 47214.

It is an arithmetic number, because the mean of its divisors is an integer number (1774192).

Almost surely, 2^47684784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47684784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70967680).

47684784 is an abundant number, since it is smaller than the sum of its proper divisors (94250576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47684784 is a wasteful number, since it uses less digits than its factorization.

47684784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178 (or 1172 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 48.

The square root of 47684784 is about 6905.4170040628. The cubic root of 47684784 is about 362.6268353626.

The spelling of 47684784 in words is "forty-seven million, six hundred eighty-four thousand, seven hundred eighty-four".